Milking device.



A. SABROE.

MILKING DEVICE.

APPLICATION rngn MAY 11, 1909 Patented Oct. 25,

AXEL SABROE, OF HADERSLEBEN. GERMANY.

MILKING DEVICE.

Specification of Letters Patent- Patented Oct. 25, 1910.

Application filed May 11, 1909. Serial No. 495,252.

T 0 all whom it'may concern:

Be it known that I. Axnr. SABROE, a sub-- ject of the Emperor of Germany, residing at I-Iaderslelwn. Schleswig-Holstein, Germany, haveinvented certain new and useful Improvements in Milking Devices, of which the following is an exact description.

In milking machines acting pneumatically it is of the greatest ii'nport-ance, that the asperation in the conduit stops as soon as the milk is exhausted in the teats or bags. In the known constructions of milking machines this is effected either by closing the conduit by means of a float or by an elastic magnetic closing device, actuated by the flow of the milk. There are also milking machines in which between the conduit for the milk and the pneumatic )ipe a space is interposed, in which air is a mitted as soon as the flow of the milk ceases and the pressure decreases whereupon aclosing member is actuated by the atmosphelic pressure. In this case nevertheless a slight suction remains because the connection of the conduit is not positively'intercepted.

The present mvention com rises means to close the conduit for the mi k immediately by a member, moved by atmospheric pressure, when the flow of the milk ceases, and

this is effected by a member, which, inclosin the space between the conduit for the m1 k and the neumatic ipe, closes also the conduit for tie milk. Vhile the mi k is 'flowing, the pressure in this space is somewhat lower under the asperating action than the exterior atmospheric pressure on the outside of said member. Under the difference of said pressures the #member yields without closing the conduit of the milk.

But when the flow of the milk ceases, the

pressure in said space goes down to a minimum and the member is pressed inwardly by the atmospheric ressure, so that. the conduit for the milk is c osed.

At the beginnin of the milking and up to the time the milk commences to flow, the membrane must be drawn outwardly by some means in order to counteract the atmospheric pressure. Said member can be shaped differently for instance it can be an elastic body, a membrane, a piston or the like. different forms Figure 1 showing the application of a rubber plate, Fig. 2 being a metallic membrane. Fig. 3 illustrates means by closing time the milk collector or buc et '0.

In the drawing it is shown in four off the milk conduit a. valve or spigot actuated by means of an elastic plate. Fig. 4 illustrates the application of a membrane 1n a device without the conduitfor the milk, the latter forming in itself the milk-bucket.

A small space a of any shape is connected to the conduit 3) for the milk and to the pneumatic pipe (Z leading in the ordinary way to a collector. The opening of the con-' duitb is larger than the opening of the pneumatic pipe (1. Thus during the flow of the milk a ways a certain quantity of milk will remain in the space a, which acts as a regulator and produces an even flow of the milk from the conduit. As soon as the How stops the conduit is closed immediately by atmospheric pressure, acting upon the closin member. \Vhen then the conduit is close by a s igot h the conduit for the milk is ready or further use. In order to have in the space a. a relieve of ressure, when the pneumatic pipe is Cl0S6C, the plug of the spigotk is provided with a supplementary bore 2', so that air can enter the space a whenthe spigot is closed.

According to Fig. 1 the s ace 0. is closed by a rubber plate m and the atter is pressed bly the atmosphere into the space, thereby c plslirng at the same time the conduit of the m1 In Fig. 2 the rubber plate is substituted by a metallic membrane 11., which is pressed by the outer atmospheric pressure a ainst the open end of the conduit of the mil F i 3 shows a device comprising an elastic p ate 0 to which by means of a lock p is connected to a lever .1, actuating a spigotby means of a rod t.

Fig. 4 showsthe s ace a closed by means of a membrane u, w ich closes at the same time the milk conduit, formin at the same w is a weight in the center,of the membrane in serving to part1 counterbalance it.

Having now escribed my invention, what I claim is:

1. In a device for the purpose described,

2. In a device for the urpose described,

a receptacle, a milk conduit connected there- In a device for the purpose dGSClib8(i,. g receptacle having a space, a pneumatic tube connected therewith near the bottom,. .emilk conduit connected therewith near the with near the upper end, a pneumatic tube connected therewith near the bottom and 01" less area than said conduit, an ei stic niem her forming the closure for the top of said receptacle and for closing said conduit, and means for closing said pneumatic pipe, said means being provideu. with (Lil air iniet open- 

